I understand your concern and I am sorry for your symptoms.
The most common causes for such vaginal odor are -
1. Bacterial vaginosis.
2. Vaginal candidiasis.
5. Pelvic inflammatory disease.
You do not have any other symptoms except odor.
Worthwhile using a course of Metronidazole for Trichomoniasis.
For prevention - you can take oral probiotics
As home remedy you can do soaking the area in warm water (sitz bath).
Add ½ to 1 tablespoon (5 mL to 15 mL) of baking soda or 1 to 2 teaspoons (5 mL to 10 mL) of salt to the water in the plastic sitz bath. Swirl the water until the baking soda or salt dissolves. 5. Carefully sit down in the plastic sitz bath and soak your bottom area for 10 to 15 minutes.
But if the local redness or pain or tenderness is increasing or if you develop fever then you may require medical attention and antibiotic please.
May I suggest you discuss these possibilities with your primary care physician and get yourself appropriately evaluated and managed please.
I am happy that my interaction was helpful for you and put your mind at ease.
In future you can opt me as your favorite medical expert so that you can ask me a question directly. I will be happy to help anytime.
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Kind regards ***** ***** Sumanth Amperayani